At Millie's house

We reach Millie's house, and walk inside. I am carrying the two shopping bags from the lingerie store.

Almost as soon as we have entered the house, Ashley comes out of the living room. Before I have a chance to stop her, she grabs the two bags, exclaiming:

"Did you guys buy anything nice?"

She pulls out the leather strap outfit, realises what it is, smiles a big smile. Millie is trying to grab the bags from her, but Ashley is holding both bags away from her, she reaches into the second bag and pulls out the butt plug and the anal lube.

Ashley starts to laugh, Millie blushes, then Ashley says: "Wow, you two are planning an interesting evening I can tell."

Millie does not reply, Ashley is still holding the butt plug, looking at it with interest, then says: "I have heard of butt plugs, but this is the first time I see one."

Ashley looks at Millie, says: "Are you going to try it later?"

Millie nods, still blushing.

"Let me know how it feels, am really curious." Ashley says to Millie and hands her the butt plug. Millie accepts it, then puts it back in the bag.

I should say something I think to make the situation more comfortable, but what?